Table 2.
Conventional procedures | QuEChERS method | |||||
---|---|---|---|---|---|---|
acetone | acetonitrile | methanol | MeCN raw extract | PSA cleanup | GCB additional cleanup | |
12.3 ± 1.10 e | 9.8 ± 0.99 c | 1.0 ± 0.12 a | 10.5 ± 0.98 c,d | 10.6 ± 1.01 d | 3.3 ± 0.29 b |
Means ± SD. Numbers followed by the same lowercase letter did not differ statistically (Tukey test, p > 0.05).